A modified inductance-capacitance voltage controlled oscillator (LC-VCO) topology is presented in this paper. NMOS only varactor has been used instead of variable capacitance. The frequency of oscillation of the VCO is 7.68GHz with a power dissipation of 5.68mW. The designed oscillator is characterized by a tuning range of 26.73%. Compared to the reference circuit, there is an improvement in fr...

Multiphase clocks are very useful for realizing high-speed data processing systems with low-speed circuit elements. Triggered in sequence by equally-spaced N-phase clock signals, multiphase systems can achieve N-times higher operating frequencies than single-phase clocked systems. For this reason, multiphase clocks are often used for such applications as high-speed analog-digital converters (AD...

This article presents a comprehensive study on the occurrence mechanism, instability analysis, and suppression methods of self-sustained turn- off oscillation, which occurs cascode gallium nitride high electron mobility transistors (cascode GaN HEMTs). In beginning, oscillation waveforms are an...

High-frequency oscillations in cortical networks have been linked to a variety of cognitive and perceptual processes. They have also been recorded in small cortical slices in vitro, indicating that neuronal synchronization at these frequencies is generated in the local cortical circuit. However, in vitro experiments have hitherto necessitated exogenous pharmacological or electrical stimulation ...

Hua-Pin Chen and Wan-Shing Yang* Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City, Taiwan, R.O.C. 2 Department of Computer and Communication Engineering, De Lin Institute of Technology, New Taipei City, Taiwan, R.O.C. *E-mail: [email protected] Abstract In this study, two novel electronically tunable voltage-mode quadrature oscillators are proposed using o...

A piecewise linear oscillator whose oscillation can be completely characterized by algebraic methods is studied. It represents up to the best of authors’s knowledge, the first example where all the oscillation properties can be determined for all the values of the bifurcation parameter, being not a perturbation of the harmonic oscillator. In fact, algebraic expressions for coordinates of repres...

This paper presents the method used to derive the oscillation condition by using symbolic calculus. The program is based on the full nonlinear Barkhausen criterion method. The behaviour of an oscillator is described by a complex polynomial called the characteristic polynomial. This polynomial enables us to calculate the steady state features of the oscillation as well as the differential equati...

A single stage source coupled Complementary Metal Oxide Semiconductor Voltage Controlled Oscillator (CMOS VCO) is designed in this paper. The design is implemented in Cadence environment with high oscillation frequency and low power consumption. This design is a single stage and it has low phase noise because author has reduced noise sources. Oscillation frequency of the designed VCO is ranges ...

Owing to the advantages of high integration, low power consumption and locally active characteristics, locally-active memristor (LAM) has shown great potential applications in neuromorphic computing. To further investigate dynamics LAMs, a simple N-type LAM mathematical model is proposed this work. By analyzing its voltage-current characteristic small-signal equivalent circuit, neuron circuit b...

The mechanism of perturbations and spontaneous variations during monomorphic VT are unknown. We performed high density mapping the isthmus that exhibited alternans oscillation in morphology rate to characterize attributable components reentrant circuit. purpose this study is delineate patterns activation change human circuit exhibit morphologic and/or oscillations tachycardia cycle length. anal...